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Following a breast cancer diagnosis twelve months ago, the publicist overhauled her diet and embarked on a fitness regimen consisting of a 45-minute weight-based workout three times per week, and two circuit-style classes at F45.

'I had to change my eating (during radiation) so I started eating sushi...I've just continued it. I am very disciplined and I'm very careful with what I eat,' Roxy continued, before adding that she refrains from eating 'anything fattening'.

Life-changing: Following a breast cancer diagnosis twelve months ago, the mother-of-two overhauled her diet and embarked on a fitness regimen consisting of a 45-minute weight-based workout three times per week, and two circuit-style classes at F45

Strict: 'I had to change my eating (during radiation) so I started eating sushi...I've just continued it. I am very disciplined and I'm very careful with what I eat,' Roxy also told news.com.au, before adding that she refrains from eating 'anything fattening'

This is not the first time the mother-of-two has revealed her diet secrets.

In an interview with Husskie, Roxy said she starts her day with a skim piccolo and one slice of vegemite toast, before enjoying six pieces of kingfish sashimi and 6 pieces of cooked tuna mini roll for lunch and dinner - all washed down with a 'glass or three of Viognier – white wine.

Roxy also swears by cryotherapy sessions three times a week - the non-invasive, fast and effective hyper-cooling treatment that is said to aid weight-loss.

Daily eating: Roxy previously told Husskie that she starts her day with a skim piccolo and one slice of vegemite toast, before enjoying six pieces of kingfish sashimi and 6 pieces of cooked tuna mini roll for lunch and dinner - all washed down with a glass or three of Viognier – white wine

Previous years: Roxy is pictured here in September 2010, prior to her diet and exercise overhaul

Clients are immersed in a nitrogen gas chamber for a particular amount of time, with temperatures often set to -135 degrees.

Roxy revealed to Daily Mail Australia in May, that she is now up to two minutes in the Cryo chamber.

'Initially (I began) sessions for muscle recovery because my training is all weights based. I had read that it also boosts one's metabolism and flushes toxins from the skin and muscle tissue, so I tried it,' she explained.

'I am now hooked and am finding the energy levels are also much better. I've always had plenty of energy but with the kids on my own and running the three businesses - the more energy I can get, the better!' Roxy continued.

Almost unrecognisable: The Sydney notable is also pictured here in September 2008, cutting a much different figure to her more recent years

Sighting: The publicist was seen performing a series of pull-ups at Sydney's Bondi Beach on Sunday, with daughter Pixie, three, capturing a shot, later shared to Instagram

Chilling measures: Roxy also swears by cryotherapy sessions three times a week - the non-invasive, fast and effective hyper-cooling treatment that is said to aid weight-loss